Can too much vitamin d reduce tsh level to any ... - Thyroid UK

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Can too much vitamin d reduce tsh level to any degree?

gojo1 profile image
6 Replies

I previously asked about weight loss as my blood result has gone to 7. Just wondered as specialist told me my vit d level too high. Many thanks.

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TiggerMe profile image
TiggerMeAmbassador

I don't understand why he has said your Vit D is too high when it is bob on being between 100-150 optimal range?

Whereas your thyroid results are dire... has he increased your T4 dose? You won't lose weight when this hypo

TSH 7.78 mIU/L (0.34 - 4.94) 161.7%

Free T4 (fT4) 9.4 pmol/L (9.0 - 19.1) 4.0%

Free T3 (fT3) 3.8 pmol/L (2.4 - 6) 38.9%

T4:T3 Ratio 2.474 

Vitamin D 116 nmol/L (50 - 250) 33.0%

gojo1 profile image
gojo1 in reply toTiggerMe

I was not happy as I had to not only phone and ask about an appointment which was missed for months but she was happy to tell me to reduce vitamin d but said nothing about the results. So I could have stayed taking the same.She also said I took 200 levothyrixine until being put on 20 liothyronine however I was on 175 then she dropped it to 150 plus the liothyronine in letter to doctors. She deals mainly with diabetes not endocrinologist specialist.

TiggerMe profile image
TiggerMeAmbassador in reply togojo1

Typical of the majority of Endos🫤 you really need an increase in T4 if not two and then possibly a little more T3

Poppy_Ann profile image
Poppy_Ann in reply togojo1

Can you not just look at your records on line? To see what your tests are i normally see results from any tests that are done before my doctor has received his letter with results, it appears most people are not aware that they can see their own records all you have to do is ask your doctors office for access and you can see the lot, at my doctors I can even book in for an appointment before I go threw the door so do not need to go up to the desk and as soon as the doctor pressed the button to call you in it pops up an alert to let you know you have been called. It can make it much easier to visit.

SlowDragon profile image
SlowDragonAmbassador

Many members on Levo plus small dose T3 find they need BOTH Ft4 and Ft3 at least 60% through range

Far, far too often Levothyroxine reduced far too much

Get 25mcg dose increase in Levo and retest in 2 months

What are folate, ferritin and B12 results

Recommended that all thyroid blood tests early morning, ideally just before 9am, only drink water between waking and test and last dose levothyroxine 24 hours before test

This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip)

T3 ….day before test split T3 as 2 or 3 smaller doses spread through the day, with last dose approximately 8-12 hours before test

Private tests are available as NHS currently rarely tests Ft3 or all relevant vitamins

Post all about what time of day to test

healthunlocked.com/thyroidu...

Testing options and includes money off codes for private testing

thyroiduk.org/testing/

Medichecks Thyroid plus BOTH TPO and TG antibodies and vitamins

medichecks.com/products/adv...

Blue Horizon Thyroid Premium Gold includes BOTH TPO and TG antibodies, cortisol and vitamins

bluehorizonbloodtests.co.uk...

Medichecks and BH also offer private blood draw at clinic near you, or private nurse to your own home…..for an extra fee

Only do private testing early Monday or Tuesday morning.

Tips on how to do DIY finger prick test

support.medichecks.com/hc/e...

If you normally take levothyroxine at bedtime/in night ...adjust timings as follows prior to blood test

If testing Monday morning, delay Saturday evening dose levothyroxine until Sunday morning. Delay Sunday evening dose levothyroxine until after blood test on Monday morning. Take Monday evening dose levothyroxine as per normal

Tina_Maria profile image
Tina_Maria

The advice on Vitamin D is simply wrong, the scale does go up to 250 and as the optimal range is up to 150nmol/l, yours is still well within that range. GPs see a Vitamin D level like that, panic and advise you to stop taking supplementation. Well, if you would actually follow that advice, your Vitamin D would very likely fall down to where it has been before you started supplementation - which of course is counterproductive.

If you are taking a high dose Vitamin D supplement, you could perhaps think about a smaller maintenance dose, but I would not stop it completely, as it certainly is not too high.

With regards to your thyroid tests, your TSH is indicating that you are very hypothyroid. Your T4 is also too low; when starting T3 many endocrinologists seem to reduce the T4 by too much. Some people may be okay with a low T4, but many will become symptomatic. Your T3 also seems a bit on the low side and there is room for an increase there too. It might be advisable to change only one thing at a time (perhaps start with increasing levothyroxine first) and then test again after 6-8 weeks. Your low T3 is likely also the reason that you are finding it difficult to lose weight, as this is the active hormone and has a big impact on your metabolism.

Oh, and studies have shown that Vitamin D supplementation can reduce TSH levels, so your TSH levels may actually be higher than indicated.

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